NO166168B - PROCEDURE AND APPARATUS FOR GAS CLEANING. - Google Patents

PROCEDURE AND APPARATUS FOR GAS CLEANING. Download PDF

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Publication number
NO166168B
NO166168B NO881972A NO881972A NO166168B NO 166168 B NO166168 B NO 166168B NO 881972 A NO881972 A NO 881972A NO 881972 A NO881972 A NO 881972A NO 166168 B NO166168 B NO 166168B
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Norway
Prior art keywords
gas
circuit
inverter
switch
pct
Prior art date
Application number
NO881972A
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Norwegian (no)
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NO881972D0 (en
NO881972L (en
NO166168C (en
Inventor
Lennart Gustavsson
Leif Lindau
Lars E Johansson
Original Assignee
Flaekt Ab
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from SE8603914A external-priority patent/SE454407B/en
Application filed by Flaekt Ab filed Critical Flaekt Ab
Publication of NO881972D0 publication Critical patent/NO881972D0/en
Publication of NO881972L publication Critical patent/NO881972L/en
Publication of NO166168B publication Critical patent/NO166168B/en
Publication of NO166168C publication Critical patent/NO166168C/en

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D47/00—Separating dispersed particles from gases, air or vapours by liquid as separating agent
    • B01D47/02—Separating dispersed particles from gases, air or vapours by liquid as separating agent by passing the gas or air or vapour over or through a liquid bath
    • G—PHYSICS
    • G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
    • G21C—NUCLEAR REACTORS
    • G21C9/00—Emergency protection arrangements structurally associated with the reactor, e.g. safety valves provided with pressure equalisation devices
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D47/00—Separating dispersed particles from gases, air or vapours by liquid as separating agent
    • B01D47/02—Separating dispersed particles from gases, air or vapours by liquid as separating agent by passing the gas or air or vapour over or through a liquid bath
    • B01D47/021—Separating dispersed particles from gases, air or vapours by liquid as separating agent by passing the gas or air or vapour over or through a liquid bath by bubbling the gas through a liquid bath
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D47/00—Separating dispersed particles from gases, air or vapours by liquid as separating agent
    • B01D47/10—Venturi scrubbers
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E30/00—Energy generation of nuclear origin
    • Y02E30/30—Nuclear fission reactors

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Plasma & Fusion (AREA)
  • General Engineering & Computer Science (AREA)
  • High Energy & Nuclear Physics (AREA)
  • Gas Separation By Absorption (AREA)
  • Treating Waste Gases (AREA)
  • Separation Of Particles Using Liquids (AREA)
  • Cleaning By Liquid Or Steam (AREA)
  • Nozzles (AREA)
  • Paper (AREA)
  • Filtering Of Dispersed Particles In Gases (AREA)
  • Detergent Compositions (AREA)
  • Cleaning In General (AREA)
  • Silicon Compounds (AREA)

Abstract

PCT No. PCT/SE87/00420 Sec. 371 Date Mar. 17, 1989 Sec. 102(e) Date Mar. 17, 1989 PCT Filed Sep. 17, 1987 PCT Pub. No. WO88/01901 PCT Pub. Date Mar. 24, 1988.Method for cleansing gas from solid, liquid and/or gaseous contaminants, by bubbling the gas through a liquid bath (32), and by introducing the incoming gas into a distribution means (14) and causing the gas to pass in part-streams through a multiple of inlet orifices (64) located at progressively increasing depths beneath the surface (34) of the liquid (32). With increasing inlet pressure an increasing number of inlet orifices (64) are utilized for an increasing number of part-streams. The gas flow is passed from respective inlet orifices (64) through connecting means (24, 26, 28) to outlet orifices (31) located at a considerably higher height level (h) than corresponding inlet orifices (64). The gas flow is caused to flow out through venturi nozzles (28) and/or to strike against impinger or striking surfaces (39) with a minimum pressure drop corresponding to said height differential (h). In this way full operational pressure is immediately achieved, as soon as gas is passed out through any of the inlet orifices (64), and an intense mixing of gas and liquid as well as a high cleansing efficiency are guaranteed.

Description

Elektrisk fiskeanordning. Electric fishing device.

Foreliggende oppfinnelse vedrorer elektriske anordninger for fiske uten garnredskaper ved å styre fisken til fiskeplassen ved hjelp av å sende ut i vannet et pulserende elektrisk felt med konstant polaritet. Oppfinnelsen angår særlig mobile anordninger for fiske i vanskelig tilgjengelig farvann. The present invention relates to electrical devices for fishing without net tools by guiding the fish to the fishing ground by sending out into the water a pulsating electric field with constant polarity. The invention particularly relates to mobile devices for fishing in difficult-to-access waters.

I kjente anordninger for elektrisk fiske er det pulserende elektriske felt frembrakt ved hjelp av elektroder som er forbundet til en utladningskrets omfattende avbryter og meke lisk-eller spennings-styrte transduktorer med effektforsterkere. In known devices for electric fishing, the pulsating electric field is produced by means of electrodes which are connected to a discharge circuit comprising an interrupter and mech lisk- or voltage-controlled transducers with power amplifiers.

De kjente anordninger er som regel kompliserte, voluminøse og er lite pålitelige under drift. Det er vel kjent at Kfr. kl. 45h-79/02 The known devices are usually complicated, bulky and are not very reliable during operation. It is well known that Kfr. at 45h-79/02

» • mekaniske transduktorer må være under standig tilsyn (kontakt-rens-ing, justering,etc.), er upålitelige under spesielle driftsforhold og, hvilket er av stor betydning, krever tilleggskraft for driften. » • mechanical transducers must be under constant supervision (contact cleaning, adjustment, etc.), are unreliable under special operating conditions and, which is of great importance, require additional power for operation.

Transistorstyrte spenningstransduktorer som brukes i vanlige anordninger for elektrisk fiske omfatter kompliserte kretser, er kostbare og er ugunstig påvirket a-v temperaturforandringer. Transistor controlled voltage transducers used in common devices for electric fishing include complicated circuits, are expensive and are adversely affected by temperature changes.

Under drift er de vanskelige å betjene og er usikre for personalet. During operation, they are difficult to operate and are unsafe for staff.

Det er derfor en hensikt med foreliggende oppfinnelse å komme fram til en mobil anordning for elektrisk fiske som er bekvemmelig og sikker under drift. It is therefore a purpose of the present invention to arrive at a mobile device for electric fishing which is convenient and safe during operation.

En annen hensikt med oppfinnelsen er å komme fram til en anordning som er pålitelig under drift og har forholdsvis enkle elektriske kretser og konstruksjon. Another purpose of the invention is to arrive at a device which is reliable during operation and has relatively simple electrical circuits and construction.

° Med tanke på de ovenfor nevnte og andre hensikter er det oppfinnelsens mål å komme fram til en elektrisk fiskeanordning som har en forbedret utladningskrets og er stabil og pålitelig under drift. ° In view of the above-mentioned and other purposes, it is the aim of the invention to arrive at an electric fishing device which has an improved discharge circuit and is stable and reliable during operation.

I foreliggende oppfinnelse har disse hensikter blitt oppnådd i en elektrisk fiskeanordning hvori en invertor som omfatter effekt tyratroner og som har et bryterelement i utgangskretsen er koplet til spenningstransduktoren og hvor avbryteren som er utfort som en effekt tyratron er koplet til utladningskretsen og har sin styreelektrode koplet til styrekretsen. In the present invention, these purposes have been achieved in an electric fishing device in which an inverter comprising power thyratrons and which has a switch element in the output circuit is connected to the voltage transducer and where the interrupter which is implemented as a power thyratron is connected to the discharge circuit and has its control electrode connected to the control circuit.

Transduktoren er koplet til en push-pull triggerkrets i en selvsvingende oscillator omfattende to transistorer som har felles emitter. The transducer is connected to a push-pull trigger circuit in a self-oscillating oscillator comprising two transistors that have a common emitter.

I styrekretsen er det fordelaktig å kople inn en selvsvingende forsinkelsesmultivibrator omfattende to sjikt-transistorer, én variabel motstand og en kondensator hvis parametre er justert for å gi forandring i repetisjonsfrekvensen av utladnings-pulserie som fores til utgangselektrodene. In the control circuit, it is advantageous to connect a self-oscillating delay multivibrator comprising two layer transistors, one variable resistance and a capacitor whose parameters are adjusted to give a change in the repetition frequency of the discharge pulse series which is fed to the output electrodes.

I invertorkretsen er det å anbefale å kople inn et overbelastningsrelé som bryterelement for gjentatt trykking av invertoren etter omstyringen. In the inverter circuit, it is recommended to connect an overload relay as a switching element for repeated pressing of the inverter after the reversal.

En trykk-knappbryter er koplet inn i invertorens utgangskrets. For bekvemmelig og sikker drift av anordningen bor bryteren monteres på et dielektrisk teleskoplignende håndtak omfattende den positive utgangselektroden. A push-button switch is connected to the inverter's output circuit. For convenient and safe operation of the device, the switch should be mounted on a dielectric telescope-like handle comprising the positive output electrode.

Oppfinnelsen vil i det folgende bli beskrevet under henvisning til tegningen som viser et elektrisk koplingsdia-gram for den elektriske fiskeanordningen. The invention will be described in the following with reference to the drawing which shows an electrical connection diagram for the electric fishing device.

Inne i det stbv- og vanntette huset (ikke vist) er det montert en kraftkilde 1 omfattende et batteri som er sammensatt av små celler, og en elektronisk koplingsenhet 2. Inside the stbv and waterproof housing (not shown) is mounted a power source 1 comprising a battery composed of small cells and an electronic switching unit 2.

Den elektroniske koplingsenheten 2 omfatter en oscillator 3» en invertor 4> en spenningstransduktor 5, et utladnings-kondensatorbatteri 6, en avbryter 7 med en pulsgiver 8, en utgangs-transformator 9 og en pulsrepetisjonsfrekvensbryter 10. The electronic switching unit 2 comprises an oscillator 3, an inverter 4, a voltage transducer 5, a discharge capacitor battery 6, an interrupter 7 with a pulse generator 8, an output transformer 9 and a pulse repetition frequency switch 10.

Kraftkilden 1 er koplet til den elektroniske koplingsenheten 2 gjennom en bryteranordning 11. The power source 1 is connected to the electronic coupling unit 2 through a switch device 11.

På utsiden av huset er det montert en bryter 12 A switch 12 is mounted on the outside of the housing

for oscillatoren 3> et voltmeter 13, kontakter 14 og 15 for innkopling av den styrte anode 16 og en katode 17« for the oscillator 3> a voltmeter 13, contacts 14 and 15 for connecting the controlled anode 16 and a cathode 17"

Oscillatoren 3 er basert på en push-pull selvsvingende oscillator omfattende transistorer 18 og 19 og en transformator 20. The oscillator 3 is based on a push-pull self-oscillating oscillator comprising transistors 18 and 19 and a transformer 20.

Invertoren 4 omfatter effekt-tyratroner 21 og en transformator 22. Et overbelastningsrelé 23 er koplet inn i utgangskretsen til invertoren 4- The inverter 4 comprises power thyratrons 21 and a transformer 22. An overload relay 23 is connected into the output circuit of the inverter 4-

Sekundærviklingen i transformatoren 20 og begrensningsmotstandene 24 danner en triggerkrets for invertor 4- The secondary winding in the transformer 20 and the limiting resistors 24 form a trigger circuit for inverter 4-

Avbryteren 7 er en tyratron hvis styrekrets er koplet til uttaket på pulsgiveren 8 som er dannet av en selvsvingende forsinkelsesmultivibrator omfattende to transistorer 25 og 26, en utgangskrets med en transformator 27, en begrensningsmotstand 28 og en diode 29• The interrupter 7 is a thyratron whose control circuit is connected to the output of the pulse generator 8 which is formed by a self-oscillating delay multivibrator comprising two transistors 25 and 26, an output circuit with a transformer 27, a limiting resistor 28 and a diode 29•

En trykk-knappbryter 30 f°r utgangskretsen av invertoren 4 er montert på et dielektrisk teleskoplignende håndtak (ikke vist) omfattende anode 16. A push-button switch 30 for the output circuit of the inverter 4 is mounted on a dielectric telescope-like handle (not shown) comprising anode 16.

For trygging av anordningen er bryteren 12 åpnet slik at oscillatoren 3 blir strbmforende. Spenningen som blir indusert i den sekundære viklingen i transformatoren 20 fores til styreelektrodene i tyratronene 21 gjennom begrensningsmotstandene 24-Ved innkopling av bryteren 30 sluttes utgangskretsen til invertoren 4 som induserer en vekselspenning i sekundærviklingen på transformatoren 22. Denne spenning fores over en drossel-spole 31 "til spenningstransduktoren 5 hvor den blir likerettet. To secure the device, the switch 12 is opened so that the oscillator 3 becomes current-conducting. The voltage that is induced in the secondary winding in the transformer 20 is fed to the control electrodes in the thyratrons 21 through the limiting resistors 24 - When the switch 30 is switched on, the output circuit of the inverter 4 is closed, which induces an alternating voltage in the secondary winding of the transformer 22. This voltage is fed across a choke coil 31 "to the voltage transducer 5 where it is rectified.

Likespenningen blir deretter benyttet til å lade opp det uladede kondensatorbatteriet 6. The direct voltage is then used to charge up the uncharged capacitor battery 6.

Når bryteren 30 er nedtrykket er også pulsgiveren When the switch 30 is depressed, so is the pulse generator

8 stromfbrende, hvorved denne settes i drift, men med en bestemt forsinkelse i forhold til invertoren 4* Forsinkelsestiden avhenger av parametrene i en RC-krets 32 som er koplet inn i utgangskretsen til pulsgiveren 8. 8 current generator, whereby this is put into operation, but with a specific delay in relation to the inverter 4* The delay time depends on the parameters of an RC circuit 32 which is connected to the output circuit to the pulse generator 8.

Etter at pulsgiveren 8 er satt i drift, er et ut- After the pulse transmitter 8 has been put into operation, an out-

velgende signal (positiv puls) fort til styreelektroden i avbryteren 7- selecting signal (positive pulse) quickly to the control electrode in the breaker 7-

Repetisjonsfrekvensen på utvelgingspulsene avhen- The repetition frequency of the selection pulses depends

ger av stillingen til bryteren 10 som forbinder kondensatorene 33 °g motstandene 34 som er koplet inn i basiskretsen til transistoren 26. ger of the position of the switch 10 which connects the capacitors 33 °g the resistors 34 which are connected into the base circuit of the transistor 26.

Samtidig med dette, bryteren 10 forandrer kapasi- At the same time, the switch 10 changes the capacitance

teten på kondensatorbatteriet 6, avhengig av pulsrepetisjonsfre- the tet of the capacitor battery 6, depending on the pulse repetition fre-

kvensen. Dioden 29 i styrekretsen til avbryteren 7 forhindrer nega- the quence. The diode 29 in the control circuit of the interrupter 7 prevents nega-

tive pulser å komme fram til styreelektroden i avbryteren. tive pulses to reach the control electrode in the interrupter.

Pulsamplituden er justert ved hjelp av motstanden The pulse amplitude is adjusted using the resistance

28. 28.

Etter mottaking av pulsen er tyratronavbryteren 7 After receiving the pulse, the thyratron interrupter is 7

ledende og kondensatorbatteriet 6 utlades gjennom primærviklingen i utgangstransformatoren 9. conductive and the capacitor battery 6 is discharged through the primary winding in the output transformer 9.

Dette resulterer i at en positiv puls med hby This results in a positive pulse with hby

effekt er indusert i sekundærviklingen på transformatoren 9> hvis puls er fort ut i vannet gjennom elektrodene 16 og 17. power is induced in the secondary winding of the transformer 9> whose pulse is quickly out into the water through the electrodes 16 and 17.

Tyratronavbryteren 7 er automatisk blokert, idet The thyratron interrupter 7 is automatically blocked, ie

utladningen avsluttes. En diode 36 forhindrer den negative pulsen å nå ut til vannet, hvis puls er indusert i sekundærviklingen og transformatoren 9 når det magnetiske feltet i dens kjerne er avtag- the discharge ends. A diode 36 prevents the negative pulse from reaching the water, whose pulse is induced in the secondary winding and the transformer 9 when the magnetic field in its core is removed.

ende . end.

Overbelastningsreléet 23 brukes for gjentatt tryk- The overload relay 23 is used for repeated press-

king av invertoren 4> hvis den fbrste nedtrykkingen av trykk-knapp- king of the inverter 4> if the first pressing of the push-button

bryteren 30 forårsaker omstyring av invertoren, i hvilket tilfelle strbmmen i utgangskretsen oker hurtig, reléet påvirkes, og dets kon- the switch 30 causes a reversal of the inverter, in which case the current in the output circuit increases rapidly, the relay is affected, and its con-

takt bryter kretsen. beat breaks the circuit.

Idet utgangskretsen ikke er stromfbrende, vil As the output circuit is not current consuming, will

reléet 23 utlbses og trykking gjentas. relay 23 is released and pressing is repeated.

Claims (5)

1. Elektrisk fiskeanordning som styrer fisken til fiskeplassen ved hjelp av et pulserende elektrisk felt med konstant polaritet som sendes ut i vannet fra utgangselektroder som er for-1. Electric fishing device which guides the fish to the fishing ground by means of a pulsating electric field of constant polarity which is emitted into the water from output electrodes which are bundet til en utladningskrets som omfatter en avbryter og en spenningstransduktor, karakterisert ved at det til spenningstransduktoren (5) er koplet en invertor (4) som omfatter effekt-tyratroner (21) og som har et bryterelement i utgangskretsen, og at avbryteren (7) er en effekt-tyratron i utladningskretsen, hvis styreelektrode er koplet til en styrekrets.tied to a discharge circuit comprising a switch and a voltage transducer, characterized in that an inverter (4) comprising power thyratrons (21) and which has a switch element in the output circuit is connected to the voltage transducer (5), and that the switch (7) is a power thyratron in the discharge circuit, whose control electrode is connected to a control circuit. 2. Anordning i henhold til krav 1, karakterisert ved at transduktoren (5) er koplet til en push-pull-triggerkrets i en selvsvingende oscillator (3) omfattende to transistorer (l8, 19) som har felles emitter. 2. Device according to claim 1, characterized in that the transducer (5) is connected to a push-pull trigger circuit in a self-oscillating oscillator (3) comprising two transistors (18, 19) which have a common emitter. 3. Anordning i henhold til krav 1 og 2, karakterisert ved at styrekretsen omfatter en selvsvingende forsinkelsesmultivibrator med to sjikt-transistorer (25, 26), en variabel motstand og en kondensator, hvis parametre er justert til å gi en forandring i repetisjonsfrekvensen av utladningspulsene som ledes til utgangselektrodene. 3. Device according to claims 1 and 2, characterized in that the control circuit comprises a self-oscillating delay multivibrator with two layer transistors (25, 26), a variable resistance and a capacitor, whose parameters are adjusted to give a change in the repetition frequency of the discharge pulses which is led to the output electrodes. 4- Anordning i henhold til krav 1, 2 og 3> karakterisert ved at et overbelastningsrelé (23) er koplet inn i invertorkretsen som et bryterelement, og at reléet til-veiebringer gjentatt trykking av invertoren (4) etter omstyring. 4- Device according to claims 1, 2 and 3> characterized in that an overload relay (23) is connected into the inverter circuit as a switch element, and that the relay brings about repeated pressing of the inverter (4) after reversal. 5. Anordning i henhold til krav 1, 2, 3 °6 4» karakterisert ved at utgangskretsen av invertoren (4) er utstyrt med en trykk-knappbryter (30) som er montert på et teleskoplignende dielektrisk håndtak omfattende en positiv utgangselek-trode (16).5. Device according to claim 1, 2, 3 °6 4" characterized in that the output circuit of the inverter (4) is equipped with a push-button switch (30) which is mounted on a telescope-like dielectric handle comprising a positive output electrode ( 16).
NO881972A 1986-09-17 1988-05-06 PROCEDURE AND APPARATUS FOR GAS CLEANING. NO166168C (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
SE8603914A SE454407B (en) 1986-09-17 1986-09-17 Appts. for cleansing contaminated gas
SE8702770A SE500478C2 (en) 1986-09-17 1987-07-06 Gas purification method and apparatus
PCT/SE1987/000420 WO1988001901A1 (en) 1986-09-17 1987-09-17 A method for cleansing gas and apparatus herefor

Publications (4)

Publication Number Publication Date
NO881972D0 NO881972D0 (en) 1988-05-06
NO881972L NO881972L (en) 1988-05-06
NO166168B true NO166168B (en) 1991-03-04
NO166168C NO166168C (en) 1991-06-12

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Application Number Title Priority Date Filing Date
NO881973A NO170133C (en) 1986-09-17 1988-05-06 PROCEDURE AND APPARATUS FOR GAS CLEANING.
NO881972A NO166168C (en) 1986-09-17 1988-05-06 PROCEDURE AND APPARATUS FOR GAS CLEANING.

Family Applications Before (1)

Application Number Title Priority Date Filing Date
NO881973A NO170133C (en) 1986-09-17 1988-05-06 PROCEDURE AND APPARATUS FOR GAS CLEANING.

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US (2) US4941896A (en)
EP (2) EP0324763B1 (en)
JP (2) JPH088970B2 (en)
KR (2) KR960001584B1 (en)
AT (2) ATE83165T1 (en)
AU (2) AU8030287A (en)
BG (1) BG60091B2 (en)
CA (2) CA1292426C (en)
DE (2) DE3783044T2 (en)
DK (2) DK266588A (en)
HU (1) HU206053B (en)
IN (1) IN170352B (en)
NO (2) NO170133C (en)
RU (1) RU1829953C (en)
SE (1) SE500478C2 (en)
UA (1) UA9987A (en)
WO (2) WO1988001901A1 (en)

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DK266688A (en) 1988-05-16
CA1292426C (en) 1991-11-26
SE8702770D0 (en) 1987-07-06
NO881973L (en) 1988-05-06
DE3783044D1 (en) 1993-01-21
BG60091B2 (en) 1993-10-29
RU1829953C (en) 1993-07-23
DK266588D0 (en) 1988-05-16
AU8030287A (en) 1988-04-07
US4941896A (en) 1990-07-17
DK266588A (en) 1988-05-16
DE3779319D1 (en) 1992-06-25
IN170352B (en) 1992-03-21
HUT53822A (en) 1990-12-28
CA1305045C (en) 1992-07-14
NO881973D0 (en) 1988-05-06
NO881972D0 (en) 1988-05-06
HU206053B (en) 1992-08-28
JPH01503765A (en) 1989-12-21
DK266688D0 (en) 1988-05-16
KR880701582A (en) 1988-11-03
NO881972L (en) 1988-05-06
AU7967787A (en) 1988-04-07
KR880701583A (en) 1988-11-03
NO166168C (en) 1991-06-12
WO1988001902A1 (en) 1988-03-24
DE3783044T2 (en) 1993-06-24
SE8702770L (en) 1988-03-18
US4936878A (en) 1990-06-26
ATE76323T1 (en) 1992-06-15
KR950012521B1 (en) 1995-10-18
KR960001584B1 (en) 1996-02-02
WO1988001901A1 (en) 1988-03-24
EP0324763B1 (en) 1992-05-20
JPH088970B2 (en) 1996-01-31
UA9987A (en) 1996-09-30
SE500478C2 (en) 1994-07-04
EP0326563A1 (en) 1989-08-09
JP2617502B2 (en) 1997-06-04
NO170133C (en) 1992-09-16
ATE83165T1 (en) 1992-12-15
NO170133B (en) 1992-06-09
JPH01503766A (en) 1989-12-21
EP0324763A1 (en) 1989-07-26
EP0326563B1 (en) 1992-12-09

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